<!DOCTYPE html>
<html>
	<head>
		<meta charset="utf-8">
		<title></title>
		<style>
			div{
				width: 600px;
				height: 200px;
				background:linear-gradient(90deg,#ccc 0 20px ,#fff 20px 40px);
				background-size: 40px 100%;
				background-repeat: repeat-x;
				border: 1px solid black;
			}
		</style>
	</head>
	<body>
		<div>
			
		</div>
	</body>
</html>